class_docstr: A stream that generates a rolling window of values from a stream.
  
  Parameters
  ----------
  window : int
      The size of the rolling window.
  min_periods : int, default 1
      The number of periods to wait before producing values from the aggregation
      function.
code: def has_next(self) -> bool:
      return True
  
imports: from typing import List, Callable
  import numpy
  from tensortrade.feed.core.base import Stream
  from tensortrade.feed.api.float import Float
label_desc: Use image node_id 3 for calling the Rolling obj's underlying member method code with example usage: obj.has_next() and returns: True